These show as one-tap buttons on every ticket at both stores. Use the same SKU you'd ring up in Eagle. Prices can still be changed on each ticket.
Print one invoice and test-scan it at the register. If Eagle doesn't pick up the SKU, try the other barcode type. Settings are saved on this device only.
Printing starts working on service.jwace.com. This is exactly what the DYMO will print.
